By Kampalle Ravichandran
By Priyank Narayan
By Sudha Murty
By Rentala Gopala Krishna
By John Holt
By Paul De Kruif And Translated By Jammi Koneti Rao
By Carl Sagan And Translated By V.Srinivasa Chakravarthy
By Sujatha Velpuri
By Thenneti Suri
By Bhimeswarao Vemavarapu
By K B Gopalam
By Tadanki Venkata Lakshmi Narasimha Rao
By Azad
By Dr Chaganti Surya Narayana Murty
By Rachapalem Chandra Shakarareddy
By Adapa Chiranjeevi
By Lohi Choichi Koran
By Karlapalem Hanumantarao
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